diff --git a/src/Services/Helper.php b/src/Services/Helper.php
index a68f73be..75456dfe 100644
--- a/src/Services/Helper.php
+++ b/src/Services/Helper.php
@@ -19,6 +19,10 @@ public function displayDate($date, string $timezone = null)
             return null;
         }
 
+        if (! $timezone) {
+            $timezone = config('app.timezone');
+        }
+        
         return Carbon::parse($date)->copy()->tz($timezone);
     }